Can you correct my homework

The sonnet CXVI is one of 154 Shakespeare' s sonnets. It was probably written between 1593 and 1599. It is made of 3 quatrains and a couple and the rhyme scheme is ABAB CDCD EFEF GG.
This sonnet gives a definition of Petrarchian and Platonic love. True love is described as something unmovable, like a fixed mark or a leading star.
I like very much this sonnet because it gives an idea of love which I share. I agree with the poet when he says "love is not love which alters when it alteration finds".

This is fine! :) Very good English! The only other thing I would advise you to change would be the way the words are arranged, from 'I like very much' to 'I very much like'. It sounds better to an English speaker. The first one just seems unnatural and is not correct grammar. Hope this helped!

Can you correct my homework

The sonnet CXVI is one of 154 Shakespeare' s Shakespearian sonnets. It was probably written between 1593 and 1599. It is made of 3 quatrains and a couple, and the rhyme scheme is ABAB CDCD EFEF GG.
This sonnet gives a definition of Petrarchian and Platonic love. True love is described as something unmovable, like a fixed mark or a leading star.
I like very much this sonnet because it gives an idea of love which I share. I agree with the poet when he says "love is not love which alters when it alteration finds".

Very good. While "I like very much" is a proper translation of "Mi piace molto", As Rachel wrote above, "I very much like" sounds more natural in English.